Introduction
ExtStock is a UK-registered cryptocurrency exchange launched around 2018. It marketed itself as a hub for high-frequency trading with an API handling up to 1000 requests per second. In practice, however, user feedback paints a very different picture.
User journey
Onboarding is simple, deposits go through, and the interface offers a straightforward trading terminal. Yet major red flags surface once users try to withdraw - transactions fail, support doesn’t respond, and funds become inaccessible. Reports of blocked withdrawals dominate reviews, many of which label the platform a scam.
What it claims
- High-frequency API access for algorithmic traders.
- Listings of new or obscure tokens.
- Trading via web terminal or API (no mobile app).
Pros
- Appealing concept of high-speed API for scalpers.
- Access to lesser-known altcoins.
- Minimal onboarding friction.
Cons
- Frequent withdrawal failures and blocked funds.
- Overwhelmingly negative user reviews with scam accusations.
- No effective customer support - most tickets unanswered.
- Fake or inflated volume claims, minimal verified liquidity.
- Trust scores near zero on independent trackers.
Quick overview table
| Feature | Details |
|---|---|
| Registration | UK-based (Pump House Crescent, London) |
| Launch Year | 2018 |
| Target Users | High-frequency traders, altcoin speculators |
| API Capacity | Claims up to 1000 requests/sec |
| Liquidity / Volume | Extremely low, likely inflated |
| Trust & Reputation | Poor, frequent scam reports |
| Withdrawal Safety | Unreliable, blocked funds reported |
| Support | Unresponsive or absent |
Final word
ExtStock sells itself as a fast, altcoin-friendly venue, but in practice it is riddled with problems. Withdrawal failures, frozen accounts and non-existent support outweigh any theoretical upside. For small experimental trades, it might be a curiosity. For serious capital, it is a clear no-go.